Another Crossover question

I really am starting to need this upgrade, but don't have a 60 yet and don't know when I'll get one. My question is if I do this on my 10b what will transfer over when/if I get a 60? Also if I do this to my 10b I will prolly also be adding hydro assist. Is swapping over hydro just new tab on the axle right? Anything else need to be changed?
Thanks

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